However, the real trouble came when they discovered a planetary object called Ceres. Objects like Ceres and Pluto behaved similarly to regular planets. Because of the limitations on the technology at the time, it was very difficult to observe precise details about these objects. As a result, they had a tough problem whether to classify it as a planet. During the 1990’s, scientists discovered more Pluto like objects in the Kuiper Belt.
Astronomers also considered the idea that it might be a failed start formed during binary star formation however the mass ratio of the planet and it’s star is too different for that to be likely either. Therefore, scientists cannot explain how such a massive planet could be formed so far out. Many astronomers are excited about this new discovery because it shows the diversity planet formation, giving them new ideas to contemplate and shows us that there is still much we don’t know about the universe. Background Information The most commonly accepted theory of planet formation is the solar nebula theory. In this theory, planets form by slowly by collecting materials leftover from its star’s formation.
Technolo... ... middle of paper ... ...ng and all the other planets and the sun revolved around it. Look how crazy it is to think that now. It isn’t crazy because it is fact that earth isn’t the center. Technology and knowledge has brought us across great voids that we thought weren’t possible to attempt. We flew to the moon in 1969, but now we have the power to fly to Mars.
Pluto: A Planet? Many issues have arisen from the debate whether or not Pluto is a planet. Some astronomers say that Pluto should be classified as a “minor planet” due to its size, physical characteristics, and other factors. On the other hand, some astronomers defend Pluto’s planet status, citing several key features. Indeed, most of the problem is that there is no formal definition of a planet.
They then discovered Neptune and that halted on what they thought was the cause of the irregularity in the orbit of Uranus. William H. Pickering and Percival Lowell, two astronomers, in the late 19th century said that a larger object outside of Neptune had to be the cause of the irregularity of Uranus and not Neptune because it was too small. So they predicted the size and approximates of which lies beyond our Solar System that Lowell called Planet X. A quite time later at Lowell Observatory in Flagstaff an Astronomer the name of Clyde W. Harbaugh discovered Pluto. Only Pluto being the fifth of the Earth’s moon they proved that it couldn’t be the cause of Neptune and Uranus orbit behavior.
This was a very big contradiction to Aristotle’s theory. To Aristotleans the world was the center of the universe and that it was perfect. This showed us the holes in the celestial realm. It is not perfect like people believed it to be. If the moon had all of these imperfections, then any other member of the universe could also be this way.
However, the demotion of Pluto caused a lot of arguments and debates between Astronomers. Astronomers in favour of that decision thought it was a revolution of science and the way it should be approached. It wasn't until 2005 when Mike Brown discovered the "Kuiper Belt" which was said to be bigger than Pluto and the doubts about Pluto being considered as a planet raised. Regardless of the amount of astronomers who agreed about the demotion, a percentage of those scientists thought that word "Planet" is too vague. Still, having subcategories such as "Gas Giants", "Terrestrial Planets (Pluto being one of them)" and "Asteroids".
As well, the orbit of Pluto is angled, ovular, and it crosses the path of other objects, something a true planet would not be able to do. Though many people cherished Pluto dearly, it is not in fact a planet. Bibliography Dunbar, Brian. "What Is Pluto?" NASA.
Pluto Come wander with me, she said, Into regions yet untrod; And read what is still unread In the manuscripts of God. - Longfellow Although Pluto was discovered in 1930, limited information on the distant planet delayed a realistic understanding of its characteristics. Today Pluto remains the only planet that has not been visited by a spacecraft, yet an increasing amount of information is unfolding about this peculiar planet. The uniqueness of Pluto's orbit, rotational relationship with its satellite, spin axis, and light variations all give the planet a certain appeal. Pluto is usually farther from the Sun than any of the nine planets; however, due to the eccentricity of its orbit, it is closer than Neptune for 20 years out of its 249 year orbit.
Currently, evidence astronomers have collected that supports the existence of dark matter and dark energy is highly controversial. Even though dark matter and dark energy presently can not be detected by sight, touch, or sound, many astronomers declare that they exist because of the evidence from the gravitational force dark matter exerts upon the galaxies in our universe, the fact that the universe is expanding at a rapid rate, and how dark matter and dark energy confirm the properties of space. Yet, some astronomers disagree with the existence of dark matter and think that MOND is a perfect replacement for dark matter. Other astronomers believe that dark matter is really antimatter, and some scientists think that dark matter could be baryonic matter. Many astronomers who are against the existence of dark energy think that the big bang is responsible for the expansion of the universe.